Thill-coupling



(No Model.)

N. M. COMPTON & W. H. LONGOOY.

THILL COUPLING.

No. 412,071. Patented Opt. 1, 1889.

UNITED STATES PATENT ries,

NORRIS M, COMPTON AND WILLIAM LONGC-OY, OF SULLIVANVILLE, NEW YORK.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 412,071, dated October1, 1889.

Application filed July 25, 1889- Saris-1N0. 318,689. (No model.)

useful Improvementsm Thin-Couplings; and

, we do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

Our invention has reference to thill-couplings; and it consists in theimproved construction hereinafter described and set forth, whereby athill-coupling is provided that will readily enable the ends of theshafts to be readily attached to and disconnected from the clip, thearrangement of parts materially strengthened and simplified, alltendency of rattling overcome, and the accidental withdrawal of thepivot-bolt prevented.

In the accompanying drawings, forming part of this specification, Figure1 is a side view of a thill-coupling embodying our improvements, andFig. 2 is a vertical longitudinal section of the same.

The yoke-shaped clip A is bolted to the axle B in the usual manner, andits horizontal and parallel extending ears are transversely perforatedfor the bearing of the shaft pivot-bolt a, This latter bolt is providedwith the usual head andhas its other extremity threaded for theengagement of the not b. The location of the bolt within the ears ispermanent by reason of the fact that the end of said bolt is riveteddown upon the nut in order to prevent the withdrawal of said bolt afteronce being adjusted.

The rear end of each of the shafts C is slightly reduced on its underface to form the bearing for the curved back of a metal section D, themajor portion of which is presented by a curved elongated plate 0, whichis secured to said shaft by screws or other suitable securing means. Therear portion of said metal section is slightly enlarged to form the twounder bearing shoulders d e and the end stop f, which is substantiallyat right angles with the rest of the section. The under face of thesection is recessed between the bearing-shoulders d e to form atransverse bearingchannel g. The depending stop f has a longitudinalopening formed therein, the bottom of which is curved, as shown in Fig.:2.

An independent metal section E, somewhat shorter in length than thesection D, has a longitudinal plate 72, curved to correspond with theplate of the section D, and the rear portion of said section E isenlarged to form a head i, adapted to bear against the vertical face ofthe stop, as shown in the drawings. A transverse channel j is likewiseformed in the upper face of the section D, and this channel, inconjunction with that in the plate above, is designed to form atransverse .bearing perforation for the engagement and reception of thepivotbolt of the clip. A curved lug extends integrally and hori zontallyfrom the end face of the enlarged portion 21, and said lug is adapted toengage the opening in the end stop of the upper section. The plate ofsaid lower section E is provided near its front end with a verticalperforation adapted to register with the threaded opening formed in theplate of the upper section D.

In practice the shaft carrying the upper section is applied to the clip,so that the chan nel in the former will be engaged by the up-- per faceof the pivot-bolt. The lower section, while held in a position divergentfrom the upper plate, is operated to cause its curved lug to enter theopening in the end stop of the latter, after which the said plate E, byreason of the curved bottom of said opening and the correspondingcurvature of its end lug, can be elevated to a position substantiallyparallel with the upper section and enable it to be connected thereto bymeans of a thumb -screw E, adapted to be inserted through theperforation in the section E and engage the threaded recess in thesection 1), The shoulders d e not only compensate for wear, but enablethe said lower section to be so held that the shaftconnection with thebolt will not bind on the latter.

From the foregoing it will be obvious that the device is of simple andinexpensive character, and comprises comparatively few parts; that thelatter may be readily detached for cleaning or renewing and readilylubricated While in position, and that all tendency of the pivot-bolt tobecome accidentally lost or removed is prevented by reason of itspermanent connection with the clip-ears. Furthermore, the arrangement issuch that there can be no rattling or unnecessary Vibration common toordinary forms of thin-couplings.

1. The combination, in a thillcoupling, of a clip designed to beconnected to the axle and having ears permanently carrying thepivot-bolt, a metal section D, having a bolt channel and end stop, thelatter perforated, as described, and a lower section E, having abolt-channel, an end lug to engage the perforation in the stop, so as topivotally engage said sections, and a device for connecting the freeends of said sections, substantially as set forth.

2. The combination, in a thill-coupling, of the axle-clip provided Witha permanentlyattached pivot-bolt, a section D, having the bolt-channeland vertical end stop, the latter provided with an opening having acurved bottom, and the lower section E, provided With a bolt-channel andhaving the end lug to engage said stop-opening and curved to correspondwith the bottom thereof, and a thumb-screw for connecting the free endof said seetion'E to the section D, substantially as set forth.

3. The combination, in a thill-coupling, of the clip having thepermanent pivot-bolt and the sections D E, grooved, as described, andpivotally engaged in the rear of said bolt and connected as set forth,the section D having shoulders (Z c to hold the forward portion out ofcontact with the similar parts of section E, substantially as specified.

In testimony whereof We alfi X our signatures in presence of twoWitnesses.

NORRIS M. COMPTON. WVILLIAM H. LONGCOY. Witnesses:

H. II. XVARDEN, JUDD LITTLE.

